	*{
      margin: 0;
      padding: 0;
    }
    #nav{
      background: #0a94e2;
      width: 826px;
      height: 40px;
      margin-left: 200px ;
      margin-right: 200px;
    }
    ul{
      list-style:none;
    }
    ul li{
      float: left;
      line-height: 40px;
      text-align: center;
      position: relative;
    }
    a{
      text-decoration: none;
      color: #000;
      display: block;
      padding: 0 30px;
      height: 40px;
      width: 100px;
    }
    a:hover{
      color: #fff;
      background: #666;
    }
    ul li ul li{
      float: none;
      background: darkgoldenrod;
      margin-top: 2px;
    }
    ul li ul{
      position: absolute;
      left: 0;
      top: 40px;
    }
    ul li ul li a{
      width: 100px;
    }
    ul li ul li a:hover{
      background: #06f;
    }
    ul li ul{
       display: none;
    }
    .pic{
    	background: url(../img/cd.jpg);
    	background-size: 100% 100%;
    	height: 300px;
    	margin-left: 200px;
    	margin-right: 200px;
    	margin-top: 5px;
    }
    .heade{
    	margin-left: 200px;
    }
    .color{
    	float: left;
    }
    body{
    	background:mintcream;
    }
	.dh{
		background: cornflowerblue;
		height: 20px;
		text-align: right;
	}
	.dh>ul li a{ 
		text-align: center;
	}











